Question about 1991 Toyota MR2

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Head gasket hi, thanks for your advice, could you please email me the coolant bleed procedure. thanks

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Please provide your e-mail address. I'll send it now.

Posted on Oct 18, 2008

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  • Toyota Ed Oct 18, 2008

    Sent it. Hope this helps.

  • Toyota Ed Oct 18, 2008

    The graciousness of a FixYA would be greatly appreciated.

  • Toyota Ed Oct 18, 2008

    Thanks for the FixYa! Much appreciated!!!!!!!!!!!!!!!!!!!!!!!!!!



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I have a 2005 tata overheated......I let it cool down,added water and drove 20km home......on inspection I found a rusted faulty thermostat.....replced it.....drove 10km and fan kicked...

Refill the system and bleed it properly, if bubbles kelp forming need to perform a leak down test. The test is simple, take spark plugs out then one cylinder at a time test it by injecting air while in top dead center possision, if the head gasket is bad you will see air bubbles rising in the coolant. Also if air leaks anywhere else then it is also bad. Next cylinder , intake, exhaust or crankcase. Good luck, if you pay somebody to do it is should cost you a little more than replacing the plugs. If it is diesel is the same procedure but through the global plugs.

Mar 02, 2015 | Tata Cars & Trucks

1 Answer

What is the procedure for replacing head gaskets? I'm loosing coolant at a very slow rate and there are no visible leaks.

Hi, if you think its the head gasket coolant should be in oil or coming out exhaust. I think you should have the coolant system pressure tested and find out were your coolant is going for sure , it could be a leak on the intake gasket, water hose could have a pin hole , small leak in heater core , there are a few things it could be . You can rent a pressure tester at most auto parts store like advance, auto zone ,oreilys any of this have loaner tools. I would do this first then if you need more help just re post and i will help you with the steps. Thanks dodge tec

Jan 03, 2011 | 1996 Ford Explorer

1 Answer


Hi if when you filled the coolant back up you trickled the coolant in to prevent an air lock and if you also undone all the air bleed screws that run around the top of the hoses that run around the top of the engine, if you done both of the above and you still have it over heating and not heat in the car then this sounds like bad news.

it sounds like it could be head gasket trouble.

first i would drain all the coolant and refill it very slowly and undo any bleed screws if you have any in any of the top hoses, then when the coolant level is where it should be do bleed screws up if you have them and then start the engine but leave coolant filler cap off turn the heater on hot and turn it on then let the engine reach normal running temp then put the coolant cap on.
then see if it over heats, if it does then you need to have a gasses test done to prove the head gasket is at fault.

you can buy this test yourself from car spares shops and its a bottle that fits over the coolant filler cap and it has a blue liquid inside it then you run the engine and draw the air through this liquid and if the head gasket has gone it will change the color of the liquid.

check oil for signs of white substance this would prove head gasket failure if no signs of this then you need to have the sniff test done before you do any more work to the car as you could be throwing money down the drain.

let me know how you get on or if you need further assistance ok

plz rate this solution as i have a whole page of unrated posts, thanks

Sep 10, 2010 | 2000 Chevrolet Venture

5 Answers

Hello after putting on a water pump and a thermostat my 1995 nissan quest is still running hot. Why is that:

hi, when you put the coolant in did you undo any air bleed screws that run around the top hoses running around the engine( if you cant find none then it must be self bleed system) then when you go to put the coolant back in you need to trickle it in very slow to ensure you dont get an air lock as this will cause it to over heat.

then when the coolant is up to its correct level you need to leave the filler cap off and start the engine then wait for the temp to be at normal running temp then switch it off and replace the coolant filler cap, then take it for a run and see if it over heats.

have you checked if the rad fan is working and cooling as it should be also have you checked the heater in the car is working on hot it needs to be on hot and check if you have hot air coming out.

if you dont have any hot air coming out then it could mean you have head gasket problems.

let me know what you find then ill assist you further ok

plz rate this post as i have a whole page of post that are unrated, thanks

Aug 25, 2010 | 1995 Nissan Quest

1 Answer

My 2000 Mercury Cougar V6 is blowing white smoke in the morning, and loosing a little coolant. I think it should be the head or plenum gasket, or more likely a worn valve stem stem seal. I'm looking for...

You have a blown Head Gasket, if you have had leaky Valve Stem Seal the color of the smoke would be blue, for the burning oil. Either way it is more beneficial in the long run to pull the Head off and replace both the Head Gasket and install a re-built Head, instead of doing a Band-Aid repair.

Aug 13, 2010 | Mercury Cougar Cars & Trucks

1 Answer

Cylinder head gasket

hi, if you are changing the head gasket then it may be worth checking the water pump and thermostat as it could have been one of these that failed causing it to over heat and then blown the head gasket so check the water pump and thermostat once you have the cylinder head off.

You may need the head checking to see if it has been warped but this is unlikely on this make of vehicle.

Once you have done the gasket make sure that when you fill the coolant up you only trickle the water in to prevent any air lock as this will cause it to over heat again, check for any bleed screws on the coolant system to let the air out whilst filling the coolant up,

Its best you check in the workshop manual for these as their may not be none as it could be self bleed system.

It also worth checking if the head bolts need changing as they do stretch and can cause the gasket not to seal properly so replacing these may be a good idea.

Let me know how you get on or if you need further assistance ok.

ps what makes you think the head gasket has gone??

Jan 09, 2010 | 1995 Jeep Cherokee

1 Answer

93 acura continues to run hot, the bottom hose isnt getting hot. i have changed the thermostat.

this is caused by a leaking cylinder head gasket or air in the sytem, if u did not bleed the cooling system follow this procedure, it is generic for all cars.
The generic method of bleeding air from the cooling system is to use a floor jack and raise the front of the car as high as poss, then fill the coolant recovery tank full and run the engine until it just starts to overheat, high end of normal zone on gauge, then shut the engine down and run cold water over the radiator core, this will self bleed the system and the coolant will be pulled from the recovery tank, repeat as necessary, never let the recovery tank run dry or more air will be pulled into the cooling systeml , if it still overheats then you need to have the head gaskets checked with a gas analyzer for hydrocarbons present in the radiator or recovery tank

Dec 10, 2009 | 1993 Acura Legend

2 Answers

The coolant is leaking from the recovery tank only on acceleration. ive replaced the thermostat, the coolant, bleed the system and my gauge still stays on half?

I just went through this problem on my Ford Taurus of pushing coolant out the recovery cap. It turned out to be a blown head gasket. my mechanic tested it at no charge. He suggested using some K & W gasket & head sealer. I did and so far it is working beautifully.

Dec 03, 2009 | 2001 Volkswagen Passat

1 Answer

I have a 93 Toyota 4 runner that I had to replace the head gaskets on do to the recall work over torqeing the headbolts. After replacing the gaskets I can't run it with the thermastat in with out it over...

1. I would in the first place try to isolate this problem to a faulty thermostat and /or wrong fitment.

2. Get a new thermostat that is the correct spec for the vehicle. If you don't know check with the dealer.

3. Make sure you are positioning the thermo correctly in its seat and when connecting everything back up there is nothing impeding coolant flow like a poorly fitted gasket.

4. Importantly make sure that when connecting the cooling system back up and after topping it up with the correct coolant you purge the cooling system of air. If you do not do this the vehicle will overheat and potential engine damage will result.
Many vehicles have bleeder screws in place to bleed out air from the cooling system. Consult the workshop manual for the vehicle for advice on the correct procedure for bleeding air from your cooling system.

Dec 02, 2009 | 1993 Toyota 4Runner

2 Answers

My car overheats to a boiling point .The fans are working.I loose no coolant.There is no white smoke on my exaust.There is a lot of air building up in the system ,because I have to bleed it constantly.No...

If you fill the car with anti freeze when it is cold and start it up with the cap off and its bubbling in the radiator that fast it has a bad head gasket.You can buy a kit at the parts store to confirm this.It made to detect hydro carbins in the coolant.Let me know what you find out Thanks...Dan

Jul 27, 2008 | Chrysler Concorde Cars & Trucks

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